Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a6ae2160ad8b30e…

MALICIOUS

PDF

70.8 KB Created: 2021-03-08 21:34:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f534b65af71f0e2009c305976411af43 SHA-1: 33f4baac1585b6852caab6b0283219df8298f42c SHA-256: 2a6ae2160ad8b30ee39904f99f528dd2c8bc8d324865c0534ceaf4f7864b5552
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://xajibur.ru/award?keyword=argent+bestiary+pdf+download PDF link annotation
    • http://pofuxubilet.sportsontheweb.net/19100343069.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451753/normal_6015ed37995ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454820/normal_604663d6ab71c.pdfIn PDF document text
    • http://nonowun.mywebcommunity.org/public_policy_formulation_process.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365552/normal_5fcf8a698b524.pdfIn PDF document text
    • https://jedadizonavo.weebly.com/uploads/1/3/4/7/134721040/9192582.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419191/normal_600632d83086a.pdfIn PDF document text
    • https://fadabavawabup.weebly.com/uploads/1/3/4/0/134095990/4177427.pdfIn PDF document text
    • https://ganafotereko.weebly.com/uploads/1/3/1/1/131164127/momumezikemosexum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467561/normal_601f414b1c9a2.pdfIn PDF document text
    • https://wigewowatabosaz.weebly.com/uploads/1/3/4/3/134352056/puguvidoz-venoj-zixabigajaz-nabexobo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://1f571a09-6495-4108-bd1a-9715deae29b5.filesusr.com/ugd/b0bf26_9302877d38384b2c8b5833311265f61e.pdf?index=trueIn PDF document text
    • https://7a1f2a0d-094a-4466-88af-72a4af93b9fa.filesusr.com/ugd/22739b_71345999465941d68c94f39f290c3007.pdf?index=trueIn PDF document text
    • https://899154e9-876a-4ab4-94d5-c8ef2aed10f2.filesusr.com/ugd/dcf9ad_1d54dccf82334f7cac6bb1f1910bf356.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c12974d5-e3bc-4dcd-ac68-ed0e80b8db0c/at_what_age_can_you_collect_social_security_disability.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/samulewoledebejir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3d420ec-ff98-4dfb-b048-725d01a8d114/86237136244.pdfIn PDF document text
    • https://s3.amazonaws.com/pokorevalaxex/calculate_affine_transformation_matrix_from_points.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d819.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD819 5532 bytes
SHA-256: 006d6a1751f5800a39b590ed7cd3c038b52eaf6785f390eb7cae86189e2f99ae
font_01_sfnt_off0000eb12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB12 10164 bytes
SHA-256: cb3a3b526c2f597a7b8d0b4749410496c65c24582d9f085829491dc21ee1c862